在生菜表面积累的微塑料的证据和污染源的分析
Yeran Bai1, Yang Song1, Xiaoxuan He1
1Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China; State Key Laboratory of Efficient Utilization of Agricultural Water Resources, Beijing 100081, P.R. China.
Journal of hazardous materials
|April 10, 2025
概括
蔬菜上的微塑料污染对饮食健康构成高风险. 空气中的沉积和农药是主要来源,在较老的生菜叶上发现了更高的污染,需要进一步研究暴露途径.
科学领域:
- 环境科学 环境科学
- 食品安全 食品安全
- 毒理学 毒理学 毒理学
背景情况:
- 微塑料 (MP) 污染是一个日益严重的环境问题.
- 国会议员通过空气沉积和农业实践污染了蔬菜表面.
- 关于蔬菜种植环境中的MP来源的数据有限.
研究的目的:
- 检测和关联沙拉表面上的微塑料与空气传播和农药来源.
- 为了比较不同菜品种的微塑料污染.
- 评估与生菜中的微塑料相关的饮食健康风险.
主要方法:
- 在沙拉上,空气中和农药中的微塑料的量化.
- 使用分析技术识别聚合物.
- 对叶菜 (旧叶与新叶) 和状菜的微塑料负载进行比较.
- 微塑料风险评估指数的计算.
主要成果:
- 微塑料含量因生菜类型而异:旧叶 > 新叶 > 状生菜.
- 聚胺,聚乙烯和聚烯是检测到的主要聚合物.
- 空气和农药被确定为生菜上的微塑料的主要来源.
- 对于在生菜表面上的微塑料,确定了IV级风险 (高饮食健康风险).
结论:
- 空气中的沉积和农药的应用是生菜微塑料污染的重要途径.
- 菜类型会影响微塑料的积累,而较老的叶子更容易受到影响.
- 高风险水平强调,迫切需要了解和减轻通过新鲜蔬菜接触的微塑料.
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